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bids-standard / bids-specification

Brain Imaging Data Structure (BIDS) Specification
https://bids-specification.readthedocs.io/
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Motion-BIDS for MRI #1847

Open JuliusWelzel opened 5 months ago

JuliusWelzel commented 5 months ago

Your idea

Hi,

Many MRI researchers have approached me about the Motion-BIDS specifications. They would like to know if the motion from a subject could also be expressed as motion data in BIDS. As I have not worked with an MRI before, I could not tell, but I wanted to know if some MRI people could help us include this in the specifications.

Remi-Gau commented 4 months ago

image

https://bids-specification.readthedocs.io/en/stable/modality-specific-files/physiological-and-other-continuous-recordings.html#recommendations-for-specific-use-cases

Maybe worth adding a note and a link to this in the motion page ?

Remi-Gau commented 4 months ago

Also note that if the motion data was computed after acquisition it goes into deiratives: https://bids-specification--519.org.readthedocs.build/en/519/derivatives/functional-derivatives.html#motion-related-time-series

Remi-Gau commented 4 months ago

Not sure if we should care about anything related to storing motion computed for prospective motion correction in MRI scanner. I think those are mostly used for structural MRI AFAIK.

JuliusWelzel commented 4 months ago

Maybe worth adding a note and a link to this in the motion page ?

That is a good point, thanks. Do you know the leads for the MRI or would the maintainers review such a PR for the website?

Regarding storing it as derivatives, would it be stored in an extra directory but using the same layout as raw motion data?

    sub-<label>/
        derivatives/
           motion/
            <source_entities>[_desc-<label>]_motion.tsv
            <source_entities>[_desc-<label>]_motion.json